Question

How to pad a string on the left in Swift

Answer 1

import Foundation

func leftPad(_ original: String, totalWidth: Int, padChar: Character) -> String {
    let padCount = max(0, totalWidth - original.count)
    let padding = String(repeating: padChar, count: padCount)
    
    return padding + original
}

let numbers = ["3", "48", "651"]
for num in numbers {
    print(leftPad(num, totalWidth: 5, padChar: "0"))  
}



/*
run:

00003
00048
00651

*/

 

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